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Trend analysis of Icelandic discharge, precipitation and temperature series.

Jonsdottir, Jona Finndis LU ; Jónsson, Páll and Bertacchi Uvo, Cintia LU (2006) In Nordic Hydrology 37(4-5). p.365-376
Abstract
This study is a part of a Nordic co-operative research project, Climate and Energy, funded by Nordic Energy Research and the Nordic energy sector. The project has the objective of a comprehensive assessment of the impact of climate change on Nordic renewable energy resources including hydropower, wind power, biofuels and solar energy. In this paper, the long term variability of precipitation, temperature and discharge of Icelandic rivers is analyzed with respect to trends. Trend is tested for two periods: 1941–2002, since the longest Icelandic discharge records reach 60 years back in time, and 1961–2000, so that a larger set of discharge records could be included, as only a few Icelandic discharge records extend more than 40 years back in... (More)
This study is a part of a Nordic co-operative research project, Climate and Energy, funded by Nordic Energy Research and the Nordic energy sector. The project has the objective of a comprehensive assessment of the impact of climate change on Nordic renewable energy resources including hydropower, wind power, biofuels and solar energy. In this paper, the long term variability of precipitation, temperature and discharge of Icelandic rivers is analyzed with respect to trends. Trend is tested for two periods: 1941–2002, since the longest Icelandic discharge records reach 60 years back in time, and 1961–2000, so that a larger set of discharge records could be included, as only a few Icelandic discharge records extend more than 40 years back in time. An eventual trend in the time series is analyzed using the Mann–Kendall test. The test is applied to the time series of both annual and seasonal values, and also to the timing and volume of the maximum daily discharge in spring and autumn, respectively. The main conclusions from the study are that, despite significant increase in measured precipitation, discharge in non-glacial rivers has not increased. Meanwhile, spring temperatures have a negative trend and spring floods, therefore, are larger and delayed. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Discharge, Iceland, precipitation, trends, temperature, time series
in
Nordic Hydrology
volume
37
issue
4-5
pages
365 - 376
publisher
IWA Publishing
external identifiers
  • wos:000243279600005
  • scopus:33845925789
ISSN
1996-9694
DOI
10.2166/nh.2006.020
language
English
LU publication?
yes
id
713fa76c-2a04-444c-9a9e-8b3eeb724e82 (old id 748390)
date added to LUP
2016-04-04 08:45:12
date last changed
2020-01-30 01:41:49
@article{713fa76c-2a04-444c-9a9e-8b3eeb724e82,
  abstract     = {This study is a part of a Nordic co-operative research project, Climate and Energy, funded by Nordic Energy Research and the Nordic energy sector. The project has the objective of a comprehensive assessment of the impact of climate change on Nordic renewable energy resources including hydropower, wind power, biofuels and solar energy. In this paper, the long term variability of precipitation, temperature and discharge of Icelandic rivers is analyzed with respect to trends. Trend is tested for two periods: 1941–2002, since the longest Icelandic discharge records reach 60 years back in time, and 1961–2000, so that a larger set of discharge records could be included, as only a few Icelandic discharge records extend more than 40 years back in time. An eventual trend in the time series is analyzed using the Mann–Kendall test. The test is applied to the time series of both annual and seasonal values, and also to the timing and volume of the maximum daily discharge in spring and autumn, respectively. The main conclusions from the study are that, despite significant increase in measured precipitation, discharge in non-glacial rivers has not increased. Meanwhile, spring temperatures have a negative trend and spring floods, therefore, are larger and delayed.},
  author       = {Jonsdottir, Jona Finndis and Jónsson, Páll and Bertacchi Uvo, Cintia},
  issn         = {1996-9694},
  language     = {eng},
  number       = {4-5},
  pages        = {365--376},
  publisher    = {IWA Publishing},
  series       = {Nordic Hydrology},
  title        = {Trend analysis of Icelandic discharge, precipitation and temperature series.},
  url          = {http://dx.doi.org/10.2166/nh.2006.020},
  doi          = {10.2166/nh.2006.020},
  volume       = {37},
  year         = {2006},
}